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M. F. GASCON.

ADDING MACHINE.

APPLICATION FILED FEB. 7. 1919.

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4 SHEETS-SHEET l- Patented Nov. 1, 1921.,

M. F. GASCON.

ADDING MACHINE.

APPLICATION FILED FEB-7,1919.

1,395,991 Patented Nov. 1, 1921.

Q 4 SHEETS-SHEET 2.

4. 11v VE/VTOR 41,94 TTORNE YS M. F. GASCON.

ADDING MACHINE.

APPLICATION FILED FEB-7,1919.

Patmtefi Nov. 1, 1921.

4 SHEETSSHEET 3.

VENTOR Qcdcn 2m :40

295 mm? EH;

BESS 2 6L HES 32m m. R5

m MQ M F. GASCON.

ADDING MACHINE.

APPLICATION FILED FEB. 7, 1919.

UNITED STATES PATENT OFFICE.

MALCOLM F. GASCON, OF DETROIT, MICHIGAN, ASSIGNOR TO IBURROC'GHS ADDINGMACHINE COMPANY, OF DETROIT, MIC

HIGAN, A CORPORATION OF MICHIGAN.

ADDING-MACHINE.

To all whom it may concern:

Be it known that I, MALCOLM F. GAscort, a citizen of the United States,residing at Detroit, in the county of Wayne and State of Michigan, haveinvented certain new and useful Improvements in Adding-Machines,

of which the following is a specification.

My present invention relates to the printing department of an addingmachine and the object is to provide for automatic control by thelaterally shiftable paper carriage in the matter of elimination ofimprints.

Machines of the character with which this invention is concernedareequipped to do tabulating work as for example in the making of bookentries upon loose leaf ledgers, and such work frequently requiressubdivision of the printing mechanism, as for the printingof date, folionumber and amount, and the work in hand may require that printing beomitted with the carriage in one or another of its columnar positions,that is to say printing by one or moreor all of the subdivisions of theprinting mechanism.

In recent developments of machines of the kind here concerned as highdegree of automaticity as may be practicable is sought and this involvesavoidance of repetition in fingering for setting up of matter which may.require printing more than once in the same tabulatlon. At the same timenot all of the matter so set up and maybe not any of 'it should beprinted at a certain position or at certain positions in which the papercarriage may stand as the tabulation procee'ds.

By my present invention I make provision for the exercise of a control,through the agency of fixtures upon the paper caras the familiarspring-driven hammers belonging to different subdivisions of theprinting department of the machine.

In the. drawings which accompany and form part of this specificationFigure 1 represents a sectionalized left side elevation of a machine ofthe familiar Burroughs type, with parts not necessary fora complete(11s- 'closure of the invention, omitted, the portion at the rear belowthe .paper carnage being taken on the section line 11 of Fig.

v2; Fig. 2 is a horizontal section taken sub:

stantially on theline 2-2 of Fig. 1; Fig. 3 is'a rear elevation'showingthe lower portlon of the paper carriage and certaln assorlage, overimpression-making devices, such- Specification of Letters Patent.Patented Nov, 1, 1921, Application fil'ed February 7, 1919. Serial No.275,538.

ciated parts; Fig. 4 is a sectional elevation of some of the partsappearing in Fig. l but at an advanced stage in an operation of themachine; Fig. 5 is a perspective view of certain elements of thecarriage-controlled mechanism; Fig. 6 showsother elements thereof inperspective; Fig. 7 is a detail sectional view taken on the line 7-7 ofFig. 2, and Fig. 8 shows an example of work.

The machine proper requires no description, being thoroughly familiar tothose skilled in this art, and this applies also to the generalcharacteristics of the paper carnage. It may be well to further statethat in the prior application of one Robert L. Muller, Serial No.-268,064, filed'December 23, 1918, there is disclosed a machine withcarriage-controlled mechanism inclusive of that now made the subject ofthe present application, andthe example of work supcorresponding withthose of the latter to designate corresponding parts.

There isthe usual tabulation rod 9 journaled in the side pieces 8 of thepaper carrlage and carrying stop finger or dogs 12 to cooperate with thefixed stop 13 on the back panel of the machine casing. Then, as in.theMuller application, there is another and non-rotary rod 10 mounted insaid carriage side-pieces somewhat above and rearward of the tabulatorrod 9, and'this rod 10 carries adjustable collars 14. These collarssupport rollers 72, 30, 41 and 75 of varying dlameters. While theserollers correspond in function with those similarly designated in theMuller application, it should be noted that the present disclosure doesnot duplicate that of said application in the matter of multiplicity ofrollers in. different setsand their adjustability, which ischaracteristic of the Muller invention.

So far as the present invention 1s concerned 'fects governed bydiffering diameters of the rollers,'the greater the diameter of theroller the greater the d gree of: pression of the said lever arm. Thedegree of depression of this arm determines the extent to which theprinting mechanism of the machine will be disabled. The printingdepartment of the machine, as here shown, particularly in Fig. 2, issubdivided into three sections, one of which may be considered asdevoted to the printing of dates, another to the printing of folionumbers, and the third to the printing of amounts. Under the particulararrangement here shown, and having reference to the example of worksupplied by Fig. 8, depression of the lever arm 7 to the least extent,as by the smallest roller 72, results in the disabling of only themiddle section of the printing devices, to wit, those allotted to folioprinting, whereas depression of said lever arm to the greatest extent,as by roller 30, results in I disabling all three sections of theprinting mechanism. Depression of said lever arm to the medium extent,'aby either the roller 41 or the roller 75, results in disabling the dateand folio sections of the printing mechanism.

The printing mechanism proper is that long familiar in Burroughs addingmachines, comprising a gang of hammers 715 and hammer driving levers 716and latches 717 which normally restrain the hammers.

The splitting or sub-dividing is done in the usual way by omittingoverlapping tails between latches, and in the present instance thesplit' is a permanent one. However, certain devices of the samecharacter as the couplings shown in the Vincent Patent 1,166,096 ofDecember 28, 1915, are employed for purposes of the so-called hammerblocking. There is not actual blocking of hammers, as in theconstruction of the said patent, but, the principle ofimprintelimination set out in the Gooch Patent 925,805 of June 22, 1909,is followed,.z'. e. printing is prevented by early release of hammers sothat they are deprivedof percussive function. r

I have before pointed out that the printing mechanism of the machine issub-divided into as many as three sections. Then the first or datesection of theprinting mechanism is itself sub-divided, in so far asconcerns cooperative tripping action between the first and secondlatches, inasmuch as there should of course be no cipher 'ated upon bysaid bail cross bar.

717*, and there is a catch 717 pivoted upon. I

this pitman, said catch being normally upheld by a spring 717 In thepresent instance the catch has a lateral stud 717 (Fig. 7) which, whenthe catch is depressed, will take a position in front of the laterallyturned end of a pitman 717 .that is pivotally connected at its forwardend to the first latch 717. This condition is illustrated in Fig. 4. f

Thecatch 717 has a shoulder a (Fig. 4) on its underside which isnormally above the path of movement of the cross bar 160 of a bail-whichis vibrated in every operation of the machine. When the catch isdepressed (through connections presently to be described extending fromthe hammer block.,lever arm 7) the said shoulder is rought into the pathof said cross-bar, so that at the outset of the operation of the machinethe pitman 717 willbe drawn rearward and with it the pitman 717 and sothe three latches of this section of the printing mechanism will betripped and their hammers released and thereby deprived of percussivefunction,the third latch being trip' ed by the tail of the second ormiddle is applied to the middle latch of the firstdescribed section, andlikewise a catch 717 of the same sort, and furthermore thiscatch isadapted, when depressed, to be operated upon by the same bail cross-baralready described. The effect will be, of course, to trip all of thelatches of the second section of the printing mechanism and deprivetheir hammers of percussive function so that printing is prevented. Theremaining, or amount printing section of the printing mechanism,similarly has a pitman 717 and catch 717 connected with the latchcontrolling the first of its hammers, and its catch, too, is adapted,when depressed, to be oper- These three catches above referred to, maybe selectively or collectively depressed, so that the middle section ofthe printing mechanism may be alone disabled, or the date printingsection may be disabled along with it, or all three sections of theprinting mechanism may be simultaneously disabled.

The variable depression or setting of catches is done through theturning of arod 170 journaled inthe side pieces of the frame of theprinting department. Thus said shaft carries lugs for depressing thecatches,

there being three such lugs 170 (Fig. 6) longitudinally alined forsimultaneous action upon the three catches, and two such lugs 17 0 forsimultaneous action upon the catches of the date printing and folioprintingsections of the printing mechanism, and a single lug 170 fordepressing the catch of the latter section alone.

It will be recalled that the hammer block lever arm 7 is lowered varyingdegrees according to the size or diameter of the carriage roller ,ridingupon it, and it is now in order to state that thislever arm isooordinated with said rotary rod 170 through appropriate connections sothat upon the degree of depression of the lever arm will deor pend theextent of disabling of sections of the printing mechanism. Said arm isspaced considerably from the back panel of the machine casing so as toaline with the rollers, and it is formed as a side piece of a yoke 7running below a long supporting stud 3 secured to said panel (Figs. 1and 2). An enlarged portion fits against the latter and a reducedportion of said stud extends through it (with a flattened side toprevent its turning) and a further reduced portion is screw-threaded toreceive a clamping nut 3. A collar 3 intervenes and an inner arm 7 ofthe yoke vjournals on this collar. The outer yoke-arm 7 journals on ashouldered screw 3 tapped into outer end of the stud.

Said arm 7 is bent into close proximity to the back panel and has itsend notched to embrace the short rearwardly projecting arm of a bellcrank lever '17 8 pivoted at 179 and carrying upon its upstanding longerarm a supplementary arm 181 pivoted'intermediate its length at the point180, said supplementary arm 181 being spring-connected below its pivotto the long arm of the bell crank lever 178 and being notched'at itsextremity above the pivot to embrace a stud on the rear end of a slidebar 182. The latter has arack 182 on its upper edge at its front portionin mesh with a small gear or pinion 170 on the rod 170. j

The hub of the gear journals in one side plate of the printer frame, asshown in Fig. 2, and has prongs 170 (Fig. 6) engaging a slot in theenlar ed end of rod 170. A screw 170 secures the parts, being runthrough the gear and tapped into the rod. The other end of the latterreceives a screw 170 which is shouldered and supplies a trunnionjournaled in the plate at this side of the printer frame.

It will be obvious that through above described connections depressionof the hammer block lever arm more or less will result in sliding thebar 182 rearward and turning the rod 170 to a greater or less extent.(The compound make-up of the operating bell crank lever, with theyielding form of connection between its elements, is merely for safetypurposes in case of a lock-up.)

A spring 191 is applied to the bar to normally hold it forward, and toconsequently elevate the'lever-arm 7,-such normal condition constrainingthe rod to occupy the idle position, shown in Fig. 7, where none of itsprojections 170, 170 or 170 is in action. Rearward shifting of the rackbar, as brought about by depression of the lever-arm 7 by the smallestroller 72, would cause the single projection 170 to depress the catch717 with the result'of disabling only the middle section of hammers.Depression of the lever-arm by a middle-sized roller (41 75) would,bring the two projections 170 into action to addltional'ly depress thecatch 717, as shown in Fig. 4, and so result in disabling both the first(date) and second (folio number) sections of the printing mechanism.Depression of said lever-arm to the maximum extent (by the largestroller 30) would bring the projections 170. into action, depressing allthree catches 717, 717 and 717 with the result of disabling all theprinting hammers.

The slide bar 182 is suitably slotted to embrace supporting and guidingroller studs on the frame-work, the same being desig mated 192. Intheunder-side of this slide barthere are formed four notches 182,

which define the different positions of the slide bar and serve,'inconjunction with a locking pawl, to insure its proper positioning andits being held positioned during an operation of the machine. Thelocking pawl is in the form of a slide plate 195 mounted against one ofthe side plates of the printer frame and V-shaped at its upper end forengagement with one or another of the notches. A spring 196 applied tothis slide.

plate tends to draw it upward into engagement with the notched slidebar. Normally this locking pawl is restrained by a stud 197 carried by abell crank 197 which constitutes one element of a train of mechanism forvibrating the bail whose crossbar 160 operates upon any depressedcatches. In the standard construction of the Burroughs machines there isa plate 801 fastened to a drive shaft 800 and a link 802 which operatescustomers old balance is set-up and the maextending arm of said bellcrank (Fig. 1)

5 piece 160 of the bail of which said crossbar 160 is a part.

At the outset of an operation of the machine the roller stud 802elevates the long arm of the bell crank lever 197, straightening thebefore-mentioned toggle, rocking the lever 198, and lowering the link199 so that the bail 160160 is swung forward, and will therefore tripany latches whose catches have been depressed into the path of movementof the bail cross-bar 160 (Fig. 4). It will be noted also that theelevating of the long arm'of said bell crank raises the stud 197 so asto release the locking pawl 195 and permit it to engage the registeringnotch 182 of the bar 182.

Referring now to the example of work represented by Fig. 8, and assumingthat a ledger sheet A is inserted in the paper car-.

riage of the machine, and that alongside of 25 itto the left there isinserted a customers -statement sheet B, the paper carriage will befirst moved by hand to its extreme left hand position wherein the roller75 may function to prevent any date or folio printing; With the carriagein this'position, the

chine operated once to print and register that amount. In the examplehere given it appears first as $500 and is printed on the top line ofthe'ledger sheet at the extreme right. The registering mechanism of themachine is, of course, in adding condition at this time. The papercarriage is then moved by hand to its extreme right 40 hand positionwherein the left hand or charge section if the customers statement sheetis in position to be printed upon. In this position of the carriage theroller, 72 stands over the lever arm 7. The date, folio number, andamount to be charged, are set up on the keyboard and the handle operatedwhereupon the machine goes through a cycle of operations, and as thelever arm 7 is depressed to the least extent, the date and amount willbe printed but. the folio number will not'be printed (such entry has noplace on the customers statement). The paper carriage is released at theend of the operation (through familiar tabulating action) and moves overto the next columnar position in which the right hand section of thecustomers statement stands opposite the printing type. In this newposition the large diameter roller 30 depresses the leverof which theentire printing mechanism is disabled so that there will be no printingupon the customers statement (it will be understood that this right.hand section of the customers statement isfor entries of arm 7 to themaximum extent in consequencecredit items only). lVith the conclusion ofthis operation of the machine, the carriage is again released and shiftsto the next columnar position wherein the first column of the ledgersheet will be opposite the printing type. No hammer block roller comesinto action here, so that date, folio number, and amount are all printedon the ledger sheet. After this operation of the machine, the carriaget-abulates to the next column of the ledger sheet which is used for theentry of credit items only, so that there should be a blank in thiscolumn. However, it is customary in business'establishments wheremachines of this character are employed to use a tally roll forcollecting all amount entries in a condensed list. for bookkeepingpurposes. Therefore when the carriage has shifted to this particularcolumnar position, the hammer block lever arm is depressed by a middlesized roller in consequence of which the date and folio number will notbe printed upon the tally roll, but only the amount. Of course therewill be no printing upon the ledger sheet because of the interpositionof the tally roll.

More charge entries may follow, the carriage being moved back to theright, and after that credit entries may be made, the new balance havingmeantime first been printed in the third column on the ledger sheet, andthen printed in the last or-Old balance column preliminary to the entryof credit items. However, it is unnecessary to follow through in detailthe more elaborate example, such as that used in the Muller application.It will of course be understood that various arrangements of rollers maybe tion according to said subdivisions.

2. The claim 1 combination, the printing mechanism comprisingspring-actuated hammers,retracting means and restraining devices,togethergvith connections for tripping certain of said devices, andmeans controlled by the paper carriage for bringing said connectionsvinto action to cause early release of hammers and thereby deprive themof percussive effect.

3. The claim 2 combination, the connections having settable catches, andthe controlling means comprising a rotatable rod formed to variably actupon said catches, together with a reciprocating element to engage theset catches.

4. The claim 3 combination, the catches being upheld by springs, and therod having circumferentially spaced projections graduated in number.

5. The claim 3 combination, the rod having a gear, and thecarriage-controlled means comprising a rack in mesh therewith, and alever-arm operatively connected with said rack and variably actuatedbythe carriage fixtures.

6. The claim 1 combination, the carriage having laterally spaced rollersof varying diameters and the control-means including a lever-arm uponwhich said rollers ride.

7. The claim 5 combination, together with a locking pawl to hold therack and rod at different settings.

8. The claim 7 combination together with a reciprocating machine elementand a member initially actuated thereby to release the locking pawl, thelatter being spring-drawn into engagement with the bar.

9. In a machine of the class described the combination of hammers,latches, ,pitmen connected to certain latches and having catches, a bailto act on said catches, a r0- tary rod with projections for setting thecatches, a rack to rotate the rod, a pawl to lock the rack, areciprocating machine element, a system of levers and links connectedtherewith and with the said bail and one member of which operates uponsaid pawl, a laterally shiftable carriage, and means controlled therebyfor setting the rack bar.

MALCOLM F. GASGON.

